ECG

Question 0

What is the average beats per minute for the AV node?

Answer 0

40-60 bpm

Question 1

What is the average beats per minute in the SA node?

Answer 1

60-100bpm

Question 2

What is the average beats per minute for ventricles?

Answer 2

15-40 beats per minute

Question 3

How do you assess the rate in an ECG interpretation?

Answer 3

Multiply number of R waves in 6 second strip by 10.

Fast/slow, within ‘normal’ range?

Question 4

How do you assess the rhythm in an ECG interpretation?

Answer 4

Regular or irregular
Is the R-R interval constant? (Assess ventricular rhythm)
Is the P-P interval constant? (Assess atrial rhythm)

Question 5

Name 2 types of sinus dysrhythmias

Answer 5

Sinus tachycardia

Sinus bradycardia

Question 6

Name the 3 types of atrial dysrhythmias

Answer 6

Atrial flutter (think shark teeth)
Atrial fibrillation
Supra ventricular tachycardia

Question 7

Name the 3 types of ventricular tachycardia

Answer 7

Monomorphic
Polymorphic
Torsade de pointe

Question 8

How many compressions per minute?

Answer 8

100

5 cycles in 2 minutes

Question 9

How to evaluate the P wave?

Answer 9

Are P waves present?
Are P waves regular?
Is the a P wave for every QRS Complex?
Do the P waves all look the same?
Are P waves upright or inverted?

Question 10

What is the P-R interval?

Answer 10

Normal length usually 0.12-0.20 seconds, or 3-5 small squares.
Is it greater than 0.20
Is it less than 0.12
Are the PR intervals constant over ECG?

Question 11

What constitutes a normal QT interval?

Answer 11

If QT interval is half of the RR interval

Question 12

How to evaluate the QRS complex?

Answer 12

Is the QRS between 0.04-0.12 seconds or 1-3 small squares?
Are the QRS complex regular?
The the QRS have the same morphology?
Wide QRS complexes may indicate ventricles not conducting properly/abnormality